Oil burner



Sept. 11, 1928.

R. H. SMITH ET AL OIL BURNER 2 SheensSheet l RAvMo TH,

CLEM MEYERS,

Filed 001;. 23, 1926 Sept. 11, 1928.

R. H. SMITH ET AL OIL BURNER Filed OGb. 25, 1926 2 Shets-Sheet 2 RAYMOND H. SMITH, CLEMB muy@ Patented Sept. 11, 1928.

UNITED STATES PATENT OFFICE.

RAYMOND H. SMITH .AN D CLEM B. MEYERS, F RICHMOND, INDIANA.

OIL BURNER.

Application tiled` October 23, 1926. Serial No. 143,582.

This invention relates to improvements in oil burners designed particularly for domestic use but applicable also for use in connection with generating steam and other pur- L poses.

The general object of the invention is to bring about a thorough intermixture of the oil to be burned with air to support the'combustion. This object vis carried out, essentially, by means for deliveringvthe oil to a point above the mixing chamber where the oil and air are to come together; in means for conveying the oil from such elevated point in a continuous spiral path on a downward course to a series of narrow passageways through which the oil will rapidly pass and from which it will issue in small and tine streams into the mixing chamber; in means to deflect upward currents of air into the mixing chamber to take up the oil; and finally, in a restricted passageway for the burning oil and air.

In the accompanying drawings:

Figure 1 is a central vertical sectional view of our improved burner.

Figure 2 is a top plan view. In these drawings, the burner has a casing 1 open at its lower end and forming at its upper end a mixing chamber 2 having a trough 3, a pipe 4 serving to carry off any oil that may accumulate in said trough. A passage 5 for the admission of air to the burner is formed by a pipe 6 secured to the lower end of the casing 1 in any suitable manner. The

215 casing 1 has a spider 7 having a hub 8. A

fuel supply pipe 9 extends upwardly centrally ofthe casing and through the hub-8 and is securely held in place by a collar 8a said collar being clamped to the pipe 9 by set screws 8b.

The pipe 9 is screw-threaded at its upper end to receive and support an oil distributer 10 conical in shape andfashioned from a point adjacent the top with a continuous inclined spiral channel ll-tcrminating at its base with a circular groove 12 and a plurality of projections or ridges 13 extending upwardly from a flange 10a at the base of the distributer and forming a plurality of grooves 13,

said ridges 13 having cutaway portions 14 in staggered relation to one another to permit the oil to How from one groove to another and thence to the mixing chamber, a rib 15 separatlng the groove 12 from the projections. In practice the oil flows out of the top of the plpe 9, down the spiral groove 11 lnto the groove 12 and then over the rib 15 into the grooves 13'i from which it is delivered into the mixing chamber 2 infine streams, thereby preventing the burner from smokin and soot from accumulating. A flange or rip ring 15a on the base of the distributer 10 prevents the oil from collecting on the bottom of the distributer as it is being discharged into the mixing chamber.

An air deiiector 16 is mounted in the casing 1 and comprises an inverted cone, the apex of which rests on the hub 8 and has an open- 1ng 17 through which passes the pipe 9. The distributer 10 is screwed down on the pipe 9 until its lower surface engages the upper edge of the air deflector, thereby forming a relatively close fit between the two. Between the casing and the air deiiector a relatively narrow opening` 18 is provided for the passage of the air from the interior of the casing to the mixin chamber.

-The distri uter is surrounded by a shield in the nature of a dome 19 having a stem 20 at its upper lend and at its base aflange '21 and a l seating rib 2 2 which rests on the ridges at the bottom of the distributer. The flange 21 of the shield iiares outwardly toward the wall of the mixing chamber near the top thereof, forming a restricted circular passageway 23 through which the mixed oil and air passes and is burned over the outer surface of the shield. The wall 24 of the shield serves to deflect the air on its passage through the mixing chamber at the point wherethe oil leaves the distributer and thus causes a thorough mixing of the oil and air before passing through the passageway 23. A

The casing 1 of the burner is provided with lugs 25 adapted to receive standards 26 for supporting the burner.

In certain types of heating apparatus as when the stove or furnace walls are lined with brick or like material it is desirable to utilize a baiile plate 27 so that the ame from the burner will be spread outwardly toward and against the brick walls. This results in a thorough heating of the brick walls and thus for sometime after the burner is shut off the brick walls will continue to give off heat.

In other words the walls serve to store up heat when the fuel is being burned and to give it ff when the supply of fuel is cut off. This baflle plate is adapted to be supported by the Shield 19, as shown, or in any other suitable lfnanner. However, it will be understood that when the burner is utilized in a heating apparatus em loying coils the baille plate will not be used, ecause in such circumstances it is necessary to have the flame directed about the coils.

The operation of the device will be readily understood from the foregoing description and it will be apparent that We have provided an improved oil burner free from smoke and soot by reason of the fact that the oil is delivered in a finely divided condition to the mixing chamber.

We desire to be understood as comprehending within the scope of our invention such modifications as will readily occur to persons skilled in the art. 4

Having thus fully described our invention what we claim as new and desire to secure by Letters Patent, is

1. An oil burner comprising a casing whose upper end forms a mixing chamber, an oil supply pipe extending upwardly through the casing, a deflector within the casing to direct incomino' air into the mixing chamber, an

oil distributer at the upper,` end of the oil supply pipe fashioned with a continuous inclined spiral channel terminating at its base in a circular groove, a plurality of projections having staggered openings between them for the flow of the oil infine streams into the mixing chamber and a dome-shaped shield extending over the distributer.

2. An oil burner comprising a casing Whose upper end forms a mixing chamber, an oil supply pipe extending upwardly through the casing, a deflector within the casing to direct incoming air into the mixing chamber, an oildistributer at the upper end of the oil supply pipe fashioned with a continuous inclined spiral channel terminating at its base ina circular groove, a plurality of projections having staggered openings between them for the flow of oil in fine streams into the mixing chamber, and a rib Separating said circular groove from said projections over which the oil flows.

3. An oil burner comprising a casing whose upper end forms a mixing chamber, a deflector within the casing to direct incoming air into the mixing chamber and forming with the casing a restricted passageway for the air, an oil supply pipe extending upwardly through the casing, an oil distributer at the upper end of the oil pipe fashioned with a continuous inclined spiral channel terminating at its base in a circular groove, a plurality of vprojections having staggered openings for vLea-1,2138

the flow of the oil between them and into the mixiner chamber in fine streams, and a shield exten ing about the distributer and having a flange at its lower end to restrict the'passage of air and oil from the mixing chamber to cause a thorough mixing of the oil and air.

4. An oil burner comprising a casing whose upper end forms a mixing chamber, an inverted bone-shaped deflector within the casing to direct incoming air into the mixing chamber and forming with the casing a restricted passageway into the lnixing chamber, an oil supply pipe extending upwardly through thc casing, a cone-shaped oil distributer at the upper endof said pipe having a continuous spiral channel terminating in a circular groove, a rib forming the outer wall of said groove, a plurality of projections having staggered openings for the passage of oil which flows over said rib and thence into the mixing chamber in fine streams, and a dome-shaped shield extending over the distributer and having a flange at its base extending toward the wall of the casing to form a restricted opening for the passage of the mixed oil and air from the mixing chamber, thereby elfectin a complete mixing of the oil and air for com ustion.

5. In an oil burner, a cone-shaped distributer fashioned with a continuous inclined spiral channel terminating in a circular groove, a plurality of pro'ections beyond said groove having staggere into the mixing chamber, a dome-shaped shield extending over the distributer and a baille plate located in a plane above the burner and supported by said shield.

7 An oil burner comprising a casing whose upper end forms a mixing camber, a deflector within the casing to direct incoming air into the mixing chamber and forming with the casing a restricted passageway for the air, an oil supply pipe extending upwardly through the casing, an oil distributer at the .upper end of the oil pipe fashioned with a continuousI inclined spiral channel terminating at its base in a circular groove, aplurality of rojections having portions cut away so that t e cut-away portions of one projection are arranged in staggered relation to the cut-away portions of the adjacent proecopenings therebetween for the passage of oil in fine st-reams, v

tion to dividethe oil infine streams as it ows cated in a plane above the burner and supthrough the cut-away portions and into the ported by said shield. mixing chamber, andashield extending about In testimony whereof, we aiiix our signa- 10 the distributer and having a flange at its lower tu'res.

5 end to restrict the passage of air and oil from the mixing chamber to cause a thorough mix- RAYMOND H. SMITH. ingof the oil and air,`and a baiie plate 1o` CLEM B. MEYERS. 

